trigonometry

Related Questions

• A tower of height b subtends an angle at a point O on the level of the foot of the tower and at a distance a from the foot of the tower. If a pole mounted on the tower also subtends an equal angle at O, the height of the pole is

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• If $A$ lies in the second quadrant and $3\tan A+4=0,$ the value of $2\cot A-5\cos A+\sin A$is equal to

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• If ${{p}_{1}},{{p}_{2}},{{p}_{3}}$ are altitudes of a triangle $ABC$ from the vertices $A,B,C$ and $\Delta $ the area of the triangle, then $p_{1}^{-2}+p_{2}^{-2}+p_{3}^{-2}$ is equal to

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• The period of $f(x)=\sin \left( \frac{\pi x}{n-1} \right)+\cos \,\left( \frac{\pi x}{n} \right)\,\,,\,n\in Z$ , $n>2$ is

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• The period of ${{\sin }^{4}}x+{{\cos }^{4}}x$ is

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